To provide a stator assembly whose production efficiency can be increased by simplifying a molding process and which can prevent the deterioration of a commutator caused by the friction or vibration due to the rotation of a rotor, and to provide a method and equipment for molding the stator assembly.
A stator core 3 with its teeth 46 wound with windings 5 is positioned and fixed in a movable metal mold 10. Then, the movable metal mold 10 is drawn close to a fixed metal mold 12. Into a cavity formed by joining these metal molds, molten material is injected through an injection hole 38 of the fixed metal mold 12. A part of a commutator installed in the stator core 3 is shielded by a shielding section 28 provided in the fixed metal mold 12, and so the resin material does not attach to that part of the commutator 4 shielded by the shielding section 28, Then, the molten material is solidified on the outer surface of the commutator, integrally fixing the commutator 4 and the stator core 3.
NEGISHI SHOICHIRO
MURAOKA HIDETO
